Feral

Almost nothing was revealed about Feral's back story; if his official Champion's biography can be believed, his appearance - a cross between a human and a Bengal Tiger - is the result of a genetic mutation, although there are theories that he could also be the result of a genetic engineering program or a hyper-evolved feline.

Feral has based his superhero career working on the street-level, fighting drug dealers and muggers and has a lot of connections in those circles; he has never forgotten his roots even while fighting larger-scale threats as part of the Champions.

He has a drinking problem, although the exact cause of this is unclear - he drank noticably more towards the break up of the Champions, but it's possible that his issues could be stem from the back problems he has from standing upright all the time with his unusual physiology.

Feral hates crime - after the initial break up of the Champions, he went back to his solo crime fighting career but when Corefire disappeared he joined the other ex-Champions members to help look for him.

Superhuman Powers
Superhuman Strength 

Feral's unique physiology gives him far greater strength than a normal human being; he is strong enough to easily lift a car above his head and his leg muscles can take him half a city block in a single leap.

Superhuman Speed and Agility 

Feral's speed and agility are like those of a cat's, allowing him to move far faster and more silent than you would think possible, especially considering his size.

Superhuman Senses

Although this was never confirmed, it can be safely assumed that Feral has acute, animal-like senses due his cat-based biology.

Weapons
Feral's teeth and claws are natural weapons.